📄 example18-1.htm
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<title>例18-1</title>
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<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font SIZE="3"><span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
10.0pt;font-family:"Times New Roman";mso-fareast-font-family:宋体;mso-font-kerning:
10.5pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:
AR-SA">
<img src="exampl5.jpg" v:shapes="_x0000_i1025" width="324" height="219"></span></font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0">
<font face="黑体" size="2"><font LANG="ZH-CN">图</font>18-1 <font LANG="ZH-CN">文字输出</font></font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"> </p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">OnDraw<font LANG="ZH-CN">函数的代码如下：</font></font></p>
<blockquote>
<blockquote>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">#include
"math.h"</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">void
CTestFontView::OnDraw(CDC* pDC)</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">{</font></p>
<blockquote>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">CTestFontDoc*
pDoc = GetDocument( );</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">ASSERT_VALID(pDoc);</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">//
TODO: add draw code for native data here</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">for(int
i=0;i<7;i++)</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">{</font></p>
<blockquote>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">//<font LANG="ZH-CN">第一步：创建字体</font></font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">CFont
NewFont;</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">//<font LANG="ZH-CN">调用</font>CreateFont<font LANG="ZH-CN">成员函数实际创建字体</font></font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">NewFont.CreateFont(30-i,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">0,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">300*i,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">0,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">400,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">FALSE,FALSE,0,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">DEFAULT_CHARSET,OUT_DEFAULT_PRECIS,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">DEFAULT_PITCH&FF_SWISS,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">"Arial");</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"> </p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">//<font LANG="ZH-CN">第二步：将新的字体选入设备环境，并保存旧字体</font></font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">CFont
* pOldFont=(CFont *)pDC->SelectObject(&NewFont);</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">//<font LANG="ZH-CN">用</font>TextOut<font LANG="ZH-CN">输出文本</font></font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">pDC->TextOut(100*cos(3.1415926/6.0*i)+300,</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">-100*sin(3.1415926/6.0*i)+300,"<font LANG="ZH-CN">文字的输出结果</font>");</font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"> </p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">//<font LANG="ZH-CN">第三步：恢复设备环境中的旧字体</font></font></p>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">pDC->SelectObject(pOldFont);</font></p>
</blockquote>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">}</font></p>
</blockquote>
<p ALIGN="justify" style="line-height: 100%; margin-top: 0; margin-bottom: 0"><font size="2">}</font></p>
</blockquote>
</blockquote>
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</span></p>
</font>
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